Safety razor



March 17, 1936. R NYHAGEN 2,033,995

SAFETY RAZOR Filed Feb. 14, 1935 INVENTOR. .B/IRNE) R IVY/1A GENATTORNEYS Patented Mar. 17, 193 6 UNITED STATES PATENT OFFICE 3 Claims.

. the teeth.

More particularly the invention provides a safety razor including aflexible blade and a combined blade holder and. guard member havingguard teeth and means for supporting the cutting edge of the blade inoverlying spaced relation to the teeth whereby said cutting edge may beflexed towards and away from the teeth by pressure of the blade againstthe skin.

The invention further resides in the provision of means for supportingthe blade for limited relative longitudinal and transverse movements inthe plane of the blade and with reference to the blade holder and guardmember to permit of the flexing of the blade so that the same has a.limited amount of give during the shaving operation to minimize thepossibility of cutting the skin because of the yielding action of theblade.

The invention further embodies blade clamping elements mounted on theblade holder and guard member for longitudinal movement with referencethereto and for engagement with the end edges of the blade forreleasably securing the blade on said member.

By virtue of the improved construction of the razor, the shaving may bemore uniformly accomplished due to the fact that the cutting edge issufliciently spaced from the teeth to avoid interference of the teethwith portions of the blade lying directly thereover; the blade may bestropped while supported by the holder; and the blade may be inserted,removed and cleansed, with greater facility.

Other objects of the invention reside in the provision of an improvedrazor of the character set forth, which is not unduly complicated in itsconstruction or mode of use, which may be economically produced andwhich is highly eflicient for its purpose.

With the above recited and other objects in view, reference is made tothe following specification and accompanying drawing in which there havebeen disclosed several forms of the invention while the appended claimscover modifications thereof which fall within the scope of theinvention.

In the drawing:

Fig. 1 is a side view of a razor constructed in accordance with theinvention, partly broken away to disclose the underlying structure.

Fig. 2 is a top plan view thereof.

Fig. 3 is a fragmentary vertical sectional view taken approximately on aplane indicated on the line 3-3 of Fig. 2.

Fig. 4 is a sectional plan view taken approximately on the line 4-4 ofFig. 3 with a part of one of the blade clamping elements broken away.

Fig. 5 is an enlarged fragmentary transverse sectional view takenapproximately on the line 10 55 of Fig. 2.

Fig. 6 is a side view illustrating a modified form of the invention.

Fig. 7 is a plan view thereof.

Fig. 8 is an enlarged transverse sectional view taken approximately onthe line indicated at 8-8 in Fig. 7.

Fig. 9 is a plan view with the cap piece removed and showing the bladeapplied and partially broken away. v 20 Referring to the drawing bycharacters of reference, particularly the form shown in Figs. 1 to 5inclusive, A designates a blade which is preferably of the double edgeflexible type having opposite longitudinal cutting edges I 0 and formed25 with a longitudinally extending positioning slot ll intermediate itswidth, and which is notched or recessed at its corners as at l2.

The razor further includes a combined blade support and guard memberdesignated generally 30 by the reference character B, which includes abody section l5 and a cover section It which are permanently securedtogether by rivets H or equivalent fastening means. The body section I5is formed at its opposite longitudinal side edges 5 with outwardlyextending spaced intermediate guard teeth l8 and and guard teeth l9, thelatter having their upper surfaces 20 spaced above the upper surfaces ofthe intermediate guard teeth to constitute supporting surfaces for thecorners of the blade adjacent the cutting edges, the blade beingotherwise unsupported throughout the remainder of its entire area.

The cover section It is provided on its undersurface with dependinglongitudinally extending 45 side flanges 2| an depending transverselydisposed end flanges 22, the side faces of which are spaced from theside flanges 2|. The upper surface of the cover section It is providedwith a longitudinally extending blade positioning rib 23 intermediateits side edges which edges terminate flush with the bases of the teethl8 and I9 and which rib is designed to cooperate with'the longitudinalslot II in the blade A for guiding the user in properly positioning theblade on the blade holder and guard member B.

The means for releasably securing the blade in position on the member Bconsists of a pair of blade clamping elements, designated generally bythe reference character 25, which are carried by the member B forlongitudinal movement with reference thereto. The elements 25 are eachlocated between the body and cover sections l5 and I5 and guided by thelongitudinal flanges 2| and are formed with outwardly directedtransversely spaced terminals 21 having inwardly directed hookedextremities 28 which are designed, when the elements 25 are retracted,to overlie the end edges of the notched or recessed portions l2 of theblade A. The blade clamping elements 25 are designed in their extendedposition to release the blade so that it may be readily removed byeither inverting and dropping; the same from the member B or by graspingthe end edges of the blade at the portions lyin between the hookedextremities 28. In order to facilitate the grasping of the end edges ofthe blade, the sections 15 and iii of the member B are formed withflnger receiving concavities 29.

The member B has rigidly and permanently secured to the central portionthereof, a depending tubular handle 30 and the central portion of thebody section l5 of the member B is formed with a circular recess 3|concentric to the axis of the handle and opening through the uppersurface of the body section. A rotatable shaft 32 extends through thehandle and has fixedly secured to its upper end a cam disk 33 which islocated in the circular recess 3|. The lower end of the shaft 32protrudes beyond the lower end of the handle 30 and has rigidly securedthereto a knob 34 by means of which the shaft 32 may be turned in thehandle. In order to tension the shaft and knob against unintentionalturning movement, a spring washer or equivalent friction device 35 isprovided which surrounds the shaft at its juncture with the knob 34,said spring washer being located in a recess 35 at the lower end of thehandle. The shaft 32, cam disk 33 and knob 34 are rigidly assembled as aunit so that turning movement of the knob in opposite directions willeffect corresponding turning movement of the cam disk 33. The cam diskis limited to approximately a quarter of a turn by a stop pin 31 withwhich stop shoulders 38 and 38 coact, said shoulders being formed bycutting out the periphery of the cam. disk 33.

In order to impart sliding motion to the blade clamping elements 25,upon turning of the cam disk 33, the cam disk is formed with a pair ofcam slots 40 which engage with depending cam pins 4| of the elements 25,it being apparent that clockwise turning movement of the cam disk 33from the position of the parts shown in Fig. 4, will effect .an outwardshifting movement of the elements 25 to eifect a release of the hookedextremities 28 from their overlying relation to the end edges of theblade.

In the form of the invention shown in Figs. 6, 7, 8'and 9, the combinedblade holder and guard member, designated generally by the referencecharacter C, is provided with outwardly projecting intermediate guardteeth and end guard teeth 46, the latter having upper surfaces 41elevated above the upper surfaces of the intermediate guard teeth 45 soas to support the cutting edges Q8 of the blade D in overlying spacedrelation to the intermediate guard teeth. The end teeth 46 are furtherprovided with end poraoaaeos tending longitudinally between the centralaperture 50 and the apertures 5|. The razor in this form also includes acap piece 53 for retaining the blade in position on the member C andsaid cap piece is in the form of an elongated bar having transverselyextending terminals 54 which overlie the longitudinal center of theblade D and the opposite ends thereof. The cap piece 53 is provided witha central depending threaded stud 55 which is designed to extend througha central opening 56 in the blade and the central aperture 50 in themember 0 and to protrude below said member for threaded engagement inthe socket 51 in a handle 58. The cap piece 53 is also provided withlongitudinally spaced depending studs 59 adapted to extend throughcorresponding apertures 50 in the blade and the apertures 5| in themember 0. The blade D is provided with a slot 6| to receive the rib 52upon which the cap piece 53 rests at its medial longitudinal portion,while the transversely extending terminals 54 thereof are supported bythe elevated surfaces of the end portions 49 of the end teeth 46.

Under this construction and arrangement, as well as in the precedingform of the invention. the blade is loosely mounted so that it has aslight play in its own plane both longitudinally and transversely so asto permit of free flexing of the cutting edges of the blade.

What is claimed is:

1. In a safety razor, a blade holder having guard teeth at thelongitudinal side edges thereof, the endmost teeth being spaced abovethe remaining intermediate teeth and adapted to support the blade withthe cutting edges in spaced relation to and spaced above theintermediate teeth and transversely spaced pairs of longitudinallyshiftable hooks engageable around the opposite ends of the blade forreleasably holding the same on the holder against accidentaldisplacement while permitting of limited longitudinal and lateralmovements in the plane of the blade and flexing of the cutting edges bycontact with and pressure against the skin.

2. In a safety razor, a blade holder having guard teeth at alongitudinal side edge thereof, the endmost guard teeth having theirupper surfaces elevated above the upper surfaces of the remainingintermediate teeth and adapted to support the blade with the cuttingedge in spaced relation to and above said intermediate teeth, and havingraised portions on said elevated surfaces of the end teeth, and meansoverlying the ends of the blade and seated upon said raised portions forreleasably holding the blade on the holder against accidentaldisplacement while permitting of limited longitudinal and lateralmovements of the blade in its own plane and flexing of the cutting edgeby contact with and pressure against the skin.

3. In a safety razor, a blade holder having guard teeth at alongitudinal side edge thereof, the endmost guard teeth having theirupper surfaces elevated above the upper surfaces of the remainingintermediate teeth and adapted to supblade so as to permit of limitedlongitudinal and lateral movements of the blade in its own plane andflexing of the cutting edge thereof by contact with and pressure againstthe skin.

BARNEY R. NYHAGEN.

